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I use Linux and by default (or at least in my case) it does not have screen brightness control, but has a program that gives to control.
The point here is that I want to take the "user" value and use this value in a type function: system("sudo light - Valor que receber aqui");, to take the value and use in the function with C++?
What I’ve done so far (I’m implementing items I use daily): ideone.com/Qfha6c
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I consider it a scam. Not that it can’t be done, but prefer to do it in code. It has a question about it in the OS that can help. You have one more related there.
If you insist:
printf("system returnou %d", WEXITSTATUS(system("sudo light")));
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Does it give; just call the function and save the return message. After that, in a new variable, edit the string going on system(); (in this case, will treat it as a variable of type String or a simple string in C itself) and ready. Just play inside system();!
When I say edit the string.. I think a lot about C and the functions of string.h. In C++ it is easier, since there is the type String.
Vlw, would you have more information about the process to tell me ?
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Vlw, I tried to implement, but it gave several errors ( library / functions ) ... I’m making a bigger gambiara even : Imgur.com/a/4cxbM
– Luis Souza